EXHIBIT 10.21 STATE OF ALABAMA ) SHELBY COUNTY ) THIRD AMENDMENT TO LEASE AGREEMENT THIS THIRD AMENDMENT TO LEASE AGREEMENT, hereinafter referred to as the "Agreement" is made and entered into on this 27th day of February, 1998 by and between...Lease Agreement • May 4th, 1998 • Biocryst Pharmaceuticals Inc • Biological products, (no disgnostic substances)
